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511 Publications
2021 | Journal Article | LibreCat-ID: 29664
Wallscheid, Oliver. “Thermal Monitoring of Electric Motors: State-of-the-Art Review and Future Challenges.” IEEE Open Journal of Industry Applications, 2021.
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2021 | Journal Article | LibreCat-ID: 21251
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Data-Driven Permanent Magnet Temperature Estimation in Synchronous Motors with Supervised Machine Learning: A Benchmark.” IEEE Transactions on Energy Conversion 36, no. 3 (2021): 2059–67. https://doi.org/10.1109/tec.2021.3052546.
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| DOI
2021 | Journal Article | LibreCat-ID: 21254
Balakrishna, Praneeth, Gerrit Book, Wilhelm Kirchgässner, Maximilian Schenke, Arne Traue, and Oliver Wallscheid. “Gym-Electric-Motor (GEM): A Python Toolbox for the Simulation of Electric Drive Systems.” Journal of Open Source Software, 2021. https://doi.org/10.21105/joss.02498.
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2021 | Journal Article | LibreCat-ID: 25031
Schenke, Maximilian, and Oliver Wallscheid. “A Deep Q-Learning Direct Torque Controller for Permanent Magnet Synchronous Motors.” IEEE Open Journal of the Industrial Electronics Society, 2021, 388–400. https://doi.org/10.1109/ojies.2021.3075521.
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2021 | Journal Article | LibreCat-ID: 29662
Schenke, Maximilian, and Oliver Wallscheid. “Improved Exploring Starts by Kernel Density Estimation-Based State-Space Coverage Acceleration in Reinforcement Learning.” ArXiv Preprint ArXiv:2105.08990, 2021.
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2021 | Journal Article | LibreCat-ID: 21557
Brosch, Anian, Oliver Wallscheid, and Joachim Böcker. “Torque and Inductances Estimation for Finite Model Predictive Control of Highly Utilized Permanent Magnet Synchronous Motors.” IEEE Transactions on Industrial Informatics, 2021. https://doi.org/10.1109/tii.2021.3060469.
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2021 | Conference Paper | LibreCat-ID: 30340
Hagemeyer, Marc, Peter Wallmeier, Frank Schafmeister, and Joachim Böcker. “Comparison of Unidirectional Three- and Four-Wire Based Boost PFC-Rectifier Topologies for Non-Isolated Three-Phase EV On-Board Chargers under Common-Mode Aspects.” In Proc. 36th IEEE Applied Power Electronics Conference (APEC), 569–76. Phoenix, AZ, USA: IEEE, 2021.
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2021 | Newspaper Article | LibreCat-ID: 30348
Schafmeister, Frank. “Transformerless On-Board Chargers at Three- and Single-Phase Operation: Compensation of LF Common-Mode Noise by the Internal DC/DC-Stage.” Power System Design (PSD) Web Magazine, 2021.
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2021 | Dissertation | LibreCat-ID: 30849
Henkenius, Carsten. Entwurf netzfreundlicher Synchrongleichrichter mit integriertem Synchronwandler, 2021. https://doi.org/10.17619/UNIPB/1-1109.
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2021 | Conference Paper | LibreCat-ID: 29938
Unruh, Roland, Jarren Lange, Frank Schafmeister, and Joachim Böcker. “Adaptive Zero-Sequence Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical Fault Conditions.” In 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE, 2021. https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542.
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2021 | Conference Paper | LibreCat-ID: 29899
Rehlaender, Philipp, Roland Unruh, Lars Hankeln, Frank Schafmeister, and Joachim Böcker. “Frequency-Doubler Modulation for Reduced Junction Temperatures for LLC Resonant Converters Operated in Half-Bridge Configuration.” In 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe). IEEE, 2021. https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570674.
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2021 | Preprint | LibreCat-ID: 29655
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Thermal Neural Networks: Lumped-Parameter Thermal Modeling With State-Space Machine Learning.” ArXiv Preprint ArXiv:2103.16323, 2021.
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2021 | Conference Paper | LibreCat-ID: 29893
Rehlaender, Philipp, Roland Unruh, Frank Schafmeister, and Joachim Böcker. “Alternating Asymmetrical Phase-Shift Modulation for Full-Bridge Converters with Balanced Switching Losses to Reduce Thermal Imbalances.” In 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2021. https://doi.org/10.1109/apec42165.2021.9487104.
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2021 | Conference Paper | LibreCat-ID: 22218
Krauter, Stefan, Joachim Böcker, Christine Freitag, Burkhard Hehenkamp, Ulrich Hilleringmann, Katrin Temmen, Tobias Klaus, Nicolaus Rohrer, and Sven Lehmann. “Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung.” In Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021, 305–9. Pforzheim: Conexio, 2021.
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2020 | Journal Article | LibreCat-ID: 21252
Traue, Arne, Gerrit Book, Wilhelm Kirchgässner, and Oliver Wallscheid. “Toward a Reinforcement Learning Environment Toolbox for Intelligent Electric Motor Control.” IEEE Transactions on Neural Networks and Learning Systems, 2020, 1–10. https://doi.org/10.1109/tnnls.2020.3029573.
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2020 | Conference Paper | LibreCat-ID: 29884
Böcker, Joachim. “Analysis of the Magnetic Skin Effekt in Motors and Inductors.” In 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2020. https://doi.org/10.1109/speedam48782.2020.9161895.
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2020 | Journal Article | LibreCat-ID: 21250
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Estimating Electric Motor Temperatures with Deep Residual Machine Learning.” IEEE Transactions on Power Electronics 36, no. 7 (2020): 7480–88. https://doi.org/10.1109/tpel.2020.3045596.
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2020 | Conference Paper | LibreCat-ID: 29939
Unruh, Roland, Frank Schafmeister, and Joachim Böcker. “Evaluation of MMCs for High-Power Low-Voltage DC-Applications in Combination with the Module LLC-Design.” In 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE, 2020. https://doi.org/10.23919/epe20ecceeurope43536.2020.9215687.
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2020 | Conference Paper | LibreCat-ID: 29894
Rehlaender, Philipp, Sergey Tikhonov, Frank Schafmeister, and Joachim Böcker. “Dual Interleaved 3.6 KW LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode as a Single-Stage Architecture of an Automotive On-Board DC-DC Converter.” In 2020 22nd European Conference on Power Electronics and Applications (EPE’20 ECCE Europe). IEEE, 2020. https://doi.org/10.23919/epe20ecceeurope43536.2020.9215736.
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2020 | Journal Article | LibreCat-ID: 21558
Brosch, Anian, Sören Hanke, Oliver Wallscheid, and Joachim Böcker. “Data-Driven Recursive Least Squares Estimation for Model Predictive Current Control of Permanent Magnet Synchronous Motors.” IEEE Transactions on Power Electronics, 2020, 2179–90. https://doi.org/10.1109/tpel.2020.3006779.
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2020 | Conference Paper | LibreCat-ID: 29956
Stille, Karl Stephan Christian, Daniel Weber, Jarren Lange, Thorsten Vogt, Oliver Wallscheid, and Joachim Böcker. “Emulation of Microgrids for Research and Validation of Control and Operation Strategies.” In 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2020. https://doi.org/10.1109/speedam48782.2020.9161971.
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2020 | Conference Paper | LibreCat-ID: 29896
Rehlaender, Philipp, Tobias Grote, Sergey Tikhonov, Schröder Mario, Frank Schafmeister, and Joachim Böcker. “A 3,6 KW Single-Stage LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode for Automotive Onboard DC-DC Conversion.” In PCIM Europe Digital Days 2020, 2020.
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2020 | Conference Paper | LibreCat-ID: 29898
Rüschenbaum, Tobias, Philipp Rehlaender, Phuong Ha, Tobias Grote, Frank Schafmeister, and Joachim Böcker. “Two-Stage Automotive DC-DC Converter Design with Wide Voltage-Transfer Range Utilizing Asymmetric LLC Operation.” In PCIM Europe Digital Days 2020, 2020.
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2020 | Conference Paper | LibreCat-ID: 29874
Urbaneck, Daniel, Philipp Rehlaender, Frank Schafmeister, and Joachim Böcker. “LLC Converter Design in Capacitive Operation Utilizes ZCS for IGBTs – a Concept Study for a 2.2 KW Automotive DC-DC Stage.” In PCIM Europe Digital Days 2020, 2020.
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2020 | Journal Article | LibreCat-ID: 30033
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Comparison of Gray-Box and Black-Box Two-Level Three-Phase Inverter Models for Electrical Drives.” IEEE Transactions on Industrial Electronics 68, no. 9 (2020): 8646–56. https://doi.org/10.1109/tie.2020.3018060.
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| DOI
2020 | Conference Paper | LibreCat-ID: 30036
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Accurate Torque Estimation for Induction Motors by Utilizing Globally Optimized Flux Observers.” In 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2020. https://doi.org/10.1109/speedam48782.2020.9161955.
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2020 | Journal Article | LibreCat-ID: 29649
Heid, Stefan, Daniel Weber, Henrik Bode, Eyke Hüllermeier, and Oliver Wallscheid. “OMG: A Scalable and Flexible Simulation and Testing Environment Toolbox for Intelligent Microgrid Control.” Journal of Open Source Software 5, no. 54 (2020): 2435.
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2020 | Journal Article | LibreCat-ID: 29644
Bode, Henrik, Stefan Heid, Daniel Weber, Eyke Hüllermeier, and Oliver Wallscheid. “Towards a Scalable and Flexible Simulation and Testing Environment Toolbox for Intelligent Microgrid Control.” ArXiv Preprint ArXiv:2005.04869, 2020.
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2020 | Conference Paper | LibreCat-ID: 29641
Gedlu, Emebet Gebeyehu, Oliver Wallscheid, and Joachim Böcker. “Permanent Magnet Synchronous Machine Temperature Estimation Using Low-Order Lumped-Parameter Thermal Network with Extended Iron Loss Model.” In The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020), 2020:937–942, 2020.
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2020 | Conference Paper | LibreCat-ID: 30339
Ahmmad, Mohsin Ejaz, Frank Schafmeister, and Joachim Böcker. “Practical Implementation and Verification of Simple-to-Implement Digital Current Observer for Half-Bridge Topologies.” In Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM Digital Days). Nuremberg, Germany: IEEE, 2020.
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2020 | Patent | LibreCat-ID: 30362
Schafmeister, Frank. “Apparatus and Method for Charging an Electric Battery Vehicle,” 2020.
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2020 | Journal Article | LibreCat-ID: 29643
Wallscheid, Oliver, and Etienne Florian Bouna Ngoumtsa. “Investigation of Disturbance Observers for Model Predictive Current Control in Electric Drives.” IEEE Transactions on Power Electronics 35, no. 12 (2020): 13563–13572.
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2020 | Journal Article | LibreCat-ID: 29642
Hanke, Sören, Oliver Wallscheid, and Joachim Böcker. “Data Set Description: Identifying the Physics Behind an Electric Motor–Data-Driven Learning of the Electrical Behavior (Part II).” ArXiv Preprint ArXiv:2003.06268, 2020.
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2020 | Journal Article | LibreCat-ID: 29640
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Data-Driven Permanent Magnet Temperature Estimation in Synchronous Motors with Supervised Machine Learning.” ArXiv Preprint ArXiv:2001.06246, 2020.
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2020 | Dissertation | LibreCat-ID: 30853
Vogt, T. Multikriterielle Betriebsstrategien industrieller Microgrids, 2020. https://doi.org/10.17619/UNIPB/1-867.
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| DOI
2020 | Report | LibreCat-ID: 30034
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. Data Set Description: Three-Phase IGBT Two-Level Inverter for Electrical Drives, 2020. https://doi.org/10.13140/RG.2.2.23335.37280.
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| DOI
2020 | Conference Paper | LibreCat-ID: 29880
Unruh, Roland, Frank Schafmeister, and Joachim Böcker. “11kW, 70kHz LLC Converter Design with Adaptive Input Voltage for 98% Efficiency in an MMC.” In 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE, 2020. https://doi.org/10.1109/compel49091.2020.9265771.
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2020 | Conference Paper | LibreCat-ID: 29940
Unruh, Roland, Frank Schafmeister, Norbert Fröhleke, and Joachim Böcker. “1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications.” In PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. VDE, 2020.
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2020 | Conference Paper | LibreCat-ID: 30001
Strothmann, Benjamin, Till Piepenbrock, Frank Schafmeister, and Joachim Böcker. “Heat Dissipation Strategies for Silicon Carbide Power SMDs and Their Use in Different Applications.” In PCIM Europe Digital Days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 1–7, 2020.
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2019 | Conference Paper | LibreCat-ID: 15247
Grabo, Matti, Daniel Weber, Andreas Paul, Tobias Klaus, Wolfgang Bermpohl, Stefan Krauter, and Eugeny Kenig. “Entwicklung eines thermischen 1D-Simulationsmodells zur Bestimmung der Temperaturverteilung in Solarmodulen,” 2019.
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2019 | Conference Abstract | LibreCat-ID: 15248
Grabo, Matti, Daniel Weber, Andreas Paul, Tobias Klaus, Wolfgang Bermpohl, and Eugeny Kenig. “Numerische Untersuchung der Temperaturverteilung in PCM-integrierten Solarmodulen,” 2019.
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2019 | Journal Article | LibreCat-ID: 25030
Schenke, Maximilian, Wilhelm Kirchgässner, and Oliver Wallscheid. “Controller Design for Electrical Drives by Deep Reinforcement Learning: A Proof of Concept.” IEEE Transactions on Industrial Informatics, 2019, 4650–58. https://doi.org/10.1109/tii.2019.2948387.
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| DOI
2019 | Conference Paper | LibreCat-ID: 29885
Joy, Meryl Teresa, and Joachim Böcker. “Speed Estimation in Induction Machines at All Speed Ranges Using Sensing Windings.” In 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). IEEE, 2019. https://doi.org/10.1109/pedes.2018.8707494.
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2019 | Conference Paper | LibreCat-ID: 21247
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Empirical Evaluation of Exponentially Weighted Moving Averages for Simple Linear Thermal Modeling of Permanent Magnet Synchronous Machines.” In 2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019. https://doi.org/10.1109/isie.2019.8781195.
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| DOI
2019 | Conference Paper | LibreCat-ID: 21249
Kirchgässner, Wilhelm, Oliver Wallscheid, and Joachim Böcker. “Deep Residual Convolutional and Recurrent Neural Networks for Temperature Estimation in Permanent Magnet Synchronous Motors.” In 2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019. https://doi.org/10.1109/iemdc.2019.8785109.
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| DOI
2019 | Conference Paper | LibreCat-ID: 29999
Strothmann, Benjamin, Frank Schafmeister, and Joachim Böcker. “Common Mode Analysis of Non-Isolated Three-Phase EV-Charger for Bi-Directional Vehicle-to-Grid Operation.” In PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 1–7, 2019.
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2019 | Conference Paper | LibreCat-ID: 16442
Rehlaender, Philipp, Tobias Grote, Frank Schafmeister, and Joachim Böcker. “Analytical Modeling and Design of an Active Clamp Forward Converter Applied as a Single-Stage On-Board DC-DC Converter for EVs.” In PCIM Europe 2019, 2019.
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2019 | Conference Paper | LibreCat-ID: 29942
Unruh, Roland, Frank Schafmeister, Norbert Fröhleke, and Joachim Böcker. “MMC-Topology for High-Current and Low-Voltage Applications with Minimal Number of Submodules, Reduced Switching and Capacitor Losses.” In PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. VDE, 2019.
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2019 | Conference Paper | LibreCat-ID: 30035
Stender, Marius, Oliver Wallscheid, and Joachim Böcker. “Development of a Black-Box Two-Level IGBT Three-Phase Inverter Compensation Scheme for Electrical Drives.” In 2019 IEEE 28th International Symposium on Industrial Electronics (ISIE). IEEE, 2019. https://doi.org/10.1109/isie.2019.8781543.
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2019 | Conference Paper | LibreCat-ID: 29636
Hanke, Sören, Sebastian Peitz, Oliver Wallscheid, Joachim Böcker, and Michael Dellnitz. “Finite-Control-Set Model Predictive Control for a Permanent Magnet Synchronous Motor Application with Online Least Squares System Identification.” In 2019 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 1–6, 2019.
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